Issue #3328193 by jibran, alan.cole: Destination file storage should clear...

Issue #3328193 by jibran, alan.cole: Destination file storage should clear existing file on dataset update

Closes #3328193

src/Plugin/DatasetDestination/FileDestinationBase.php

@@ -250,7 +250,9 @@ abstract class FileDestinationBase extends DatasetDestinationPluginBase implemen
         ]));
       return FALSE;
     }
-    touch($this->getFilePath($dataset));
+    $filePath = $this->getFilePath($dataset);
+    $this->fileSystem->delete($filePath);
+    touch($filePath);
     return TRUE;
   }